Dusksword Saboteur

Clandestine 1
At the beginning of your upkeep, Dusksword Saboteur gets +X/+0 until end of turn. Where X is the number of spells your opponents cast last turn.
Whenever Dusksword Saboteur deals combat damage to a player, look at that many cards from the top of their library and put them back
in any order.